Peak XV joins AI cybersecurity startup's $125m round

Exaforce, an AI cybersecurity startup, has raised a US$125 million series B at a US$725 million valuation as companies spend more on tools to detect and respond to cyberattacks.

The round included HarbourVest, Peak XV, Mayfield, Khosla Ventures, and Seligman Ventures, and came about a year after Exaforce’s US$75 million series A, bringing its total funding to US$200 million.

Exaforce launched its product in the fourth quarter of 2025 after two years of testing.

Since then, it has added 20 customers, including Replit and Guardant Health, while competing with startups such as 7AI, Dropzone AI, and Prophet Security as well as Palo Alto Networks and CrowdStrike.

🔗 Source: TechCrunch

🧠 Food for thought

Implications, context, and why it matters.

Exaforce’s valuation rests on its real-time data architecture

The funding backs more than an AI add-on. It supports a system built to fix a stubborn data issue in security operations 1.
Exaforce says its platform creates a real-time security knowledge graph, a live map connecting security events, user identities, and access permissions as information comes in 1.
In many older setups, analysts must stitch that context together from separate log records after an alert fires 1.
That design lets its AI agents, called Exabots, answer investigative questions in under a minute. It also supports natural-language “vibe hunting,” which lets teams search for suspicious activity in plain English 1.

The funding aims to cut defense costs as AI speeds up attacks

Exaforce is entering an AI security arms race, as attackers use AI to speed up phishing, malware creation, reconnaissance, and exploitation faster than human analysts can respond 2.
The investment aims to lower the cost of defense and shift leverage toward defenders 1.
Guardant Health uses the platform to widen security coverage without adding staff 1.
AI-assisted security operations are moving toward standard infrastructure at large companies, as security teams face hiring gaps and attacks that move faster 2.